Relevant upstream commit is:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5cdda5f1d6adde02da591ca2196f20289977dc56
** Changed in: linux (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1836912
Title:
ipv4: enable route flushing in network namespaces
Status in linux package in Ubuntu:
Confirmed
Bug description:
Tools such as vpnc try to flush routes when run inside network
namespaces by writing 1 into /proc/sys/net/ipv4/route/flush. This
currently does not work because flush is not enabled in non-initial
network namespaces.
Since routes are per network namespace it is safe to enable
/proc/sys/net/ipv4/route/flush in there.
This has been reported against LXD a few times before
Link: https://github.com/lxc/lxd/issues/4257
Please backport this to our LTS kernels. :)
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